1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

engine problems black smoke

Discussion in 'Audi S4/A4/A4 Cab (B7 Chassis)' started by droppedaudia4, Oct 14, 2009.

  1. droppedaudia4
    Offline

    droppedaudia4 Member

    Joined:
    May 31, 2009
    Messages:
    48
    Likes Received:
    0
    my car is a 2005 2.0tdi a4 saloon 140bhp i was wondering if anyone knew a reason why my car has alot of black smoke when reving and is quite hard to start although i think the flywheels the reason why it is hard to start because it needs replacing.
    #1
  2. CL3RICx2
    Offline

    CL3RICx2 New Member

    Joined:
    Sep 29, 2009
    Messages:
    5
    Likes Received:
    0
    Probably turbo seal's. Excesive oil in the exhaust getting burnt produces the black smoke.

    Dont hold me to this, im just going off my past experience with turbo cars lol
    #2
  3. jwhat
    Offline

    jwhat Member

    Joined:
    Oct 20, 2006
    Messages:
    540
    Likes Received:
    0
    Could also be the re-map? Overfuelling.
    #3
  4. droppedaudia4
    Offline

    droppedaudia4 Member

    Joined:
    May 31, 2009
    Messages:
    48
    Likes Received:
    0
    its not the remap as i took it out last week and it hasnt helped any i thought this at the start too though
    #4
  5. sparks
    Offline

    sparks Glad im back

    Joined:
    Dec 2, 2006
    Messages:
    51
    Likes Received:
    0
    Sounds like could be a fueling problem maybe sticky injectors possibly sticking open slightly more causeing more fuel being injected in which would then give you black smoke and hard to start especially from cold.
    #5
  6. Mr_Sixx
    Offline

    Mr_Sixx Stationary

    Joined:
    Aug 30, 2007
    Messages:
    169
    Likes Received:
    0
    Most of the A4 TDi's do it!! I had exactly the same smoking problem (and still do), went to two seperate Audi Stealers with the problem - they all do it was the reply, we cant sort the issue. Apparantly it can be reduced with better quality oil such as Mobil but it doesnt get rid.
    #6
  7. Marc1
    Offline

    Marc1 Member

    Joined:
    Feb 25, 2008
    Messages:
    726
    Likes Received:
    0
    To be honest I would post a video up if you can as one persons excessive smoke could be anothers perfectly normal. If it does show excessive I would suggest it's more over fueling which could be due to a lack of air controlled by the maf sensor. I'd see if there is a member local to you with vag com or take it to a specialist to ensure no codes come up. Equally it could just be bad fuel so you could also try running a bottle of forte diesel additive through the tank to se. If it makes a difference and make sure you are using decent diesel.
    Last edited: Oct 16, 2009
    #7
  8. Wrath
    Offline

    Wrath Active Member

    Joined:
    Apr 7, 2009
    Messages:
    1,186
    Likes Received:
    2
    I wonder if the particle filter in the exhaust has become damaged. My old Leon 1.9 150bhp used to spout shedloads of smoke out the backend but that was a Euro III engine so did not have the particle filter.

    I haven't seen any black smoke from my B7 and I sometimes drive it a bit crazy :aggressive:
    #8
  9. jwhat
    Offline

    jwhat Member

    Joined:
    Oct 20, 2006
    Messages:
    540
    Likes Received:
    0
    Might you have a boost leak/ air escaping from a broken/old pipe etc.

    I don't think the particle filter was fitted until the 170bhp versions were released.
    #9

Share This Page